Java tutorial
/* * Copyright (c) 2014 Lugia Programming Team * * Licensed under the Apache License, Version 2.0 (the "License"); * you may not use this file except in compliance with the License. * You may obtain a copy of the License at * * http://www.apache.org/licenses/LICENSE-2.0 * * Unless required by applicable law or agreed to in writing, software * distributed under the License is distributed on an "AS IS" BASIS, * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. * See the License for the specific language governing permissions and * limitations under the License. */ package com.lugia.timetable; import android.app.ActionBar; import android.content.Intent; import android.net.Uri; import android.os.Bundle; import android.preference.PreferenceManager; import android.support.v4.app.FragmentActivity; import android.support.v4.app.FragmentTransaction; import android.util.Log; import android.view.Menu; import android.view.MenuItem; import android.widget.Toast; /** * Main Activity */ public class MasterActivity extends FragmentActivity implements ActionBar.OnNavigationListener, TimeTableLayout.OnDayChangedListener { private TimeTableSpinnerAdapter mSpinnerAdapter; private String mFilename; /** * The serialization (saved instance state) Bundle key representing the * current dropdown position. */ private static final String STATE_SELECTED_NAVIGATION_ITEM = "selected_navigation_item"; public static final int NAV_DAY = 0; public static final int NAV_WEEK = 1; public static final int NAV_LIST = 2; public static final int REQUEST_CODE_OPEN_FILE = 1; public static final int REQUEST_CODE_DOWNLOAD_DATA = 2; private static final String TAG = "MasterActivity"; private TimeTableFragment mTimeTableFragment; private SubjectListFragment mSubjectListFragment; @Override protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.activity_master); // Set up preferences value of this app if we run it on first time PreferenceManager.setDefaultValues(MasterActivity.this, R.xml.setting_preference, false); // Set up the action bar to show a dropdown list. final ActionBar actionBar = getActionBar(); actionBar.setDisplayShowTitleEnabled(false); actionBar.setNavigationMode(ActionBar.NAVIGATION_MODE_LIST); mFilename = null; mTimeTableFragment = new TimeTableFragment(); mSubjectListFragment = new SubjectListFragment(); getSupportFragmentManager().beginTransaction().add(R.id.container, mTimeTableFragment, "TimeTable") .add(R.id.container, mSubjectListFragment, "SubjectList").hide(mSubjectListFragment).commit(); mSpinnerAdapter = new TimeTableSpinnerAdapter(MasterActivity.this, actionBar.getSelectedNavigationIndex()); mSpinnerAdapter.setViewType(NAV_DAY); // Set up the dropdown list navigation in the action bar. actionBar.setListNavigationCallbacks(mSpinnerAdapter, this); } @Override public void onRestoreInstanceState(Bundle savedInstanceState) { // Restore the previously serialized current dropdown position. if (savedInstanceState.containsKey(STATE_SELECTED_NAVIGATION_ITEM)) getActionBar().setSelectedNavigationItem(savedInstanceState.getInt(STATE_SELECTED_NAVIGATION_ITEM)); } @Override public void onSaveInstanceState(Bundle outState) { // Serialize the current dropdown position. outState.putInt(STATE_SELECTED_NAVIGATION_ITEM, getActionBar().getSelectedNavigationIndex()); } @Override public boolean onCreateOptionsMenu(Menu menu) { // Inflate the menu; this adds items to the action bar if it is present. getMenuInflater().inflate(R.menu.master, menu); return true; } @Override protected void onActivityResult(int requestCode, int resultCode, Intent data) { if (resultCode != RESULT_OK) { Log.d(TAG, "Non RESULT_OK received: " + resultCode); return; } switch (requestCode) { case REQUEST_CODE_OPEN_FILE: { Uri selectedFileUri = data.getData(); String path = selectedFileUri.getPath(); // some file choose may need other method to get path if (path == null || path.equals("")) return; mFilename = path; break; } case REQUEST_CODE_DOWNLOAD_DATA: { // recreate the entire activity recreate(); break; } } } @Override public boolean onMenuItemSelected(int featureId, MenuItem item) { if (item.getItemId() == R.id.action_load_file) { /* Intent intent = new Intent(); // create an intent to let user choose file to open intent.setAction(Intent.ACTION_GET_CONTENT) .addCategory(Intent.CATEGORY_OPENABLE) .setType("file/*"); startActivityForResult(intent, REQUEST_CODE_OPEN_FILE); */ Toast.makeText(MasterActivity.this, "Feature Temporary Disabled.", Toast.LENGTH_LONG).show(); return true; } if (item.getItemId() == R.id.action_download_data) { Intent intent = new Intent(MasterActivity.this, LoginActivity.class); startActivityForResult(intent, REQUEST_CODE_DOWNLOAD_DATA); return true; } if (item.getItemId() == R.id.action_settings) { Intent intent = new Intent(MasterActivity.this, SettingActivity.class); startActivity(intent); return true; } return false; } @Override public void onDayChanged(int day) { Log.d(TAG, "onDayChange: " + day); mSpinnerAdapter.setCurrentDay(day); } public boolean onNavigationItemSelected(int position, long id) { // When the given dropdown item is selected, show its contents in the // container view. FragmentTransaction transaction = getSupportFragmentManager().beginTransaction(); transaction.setCustomAnimations(R.anim.fade_in, R.anim.fade_out); if (position == NAV_DAY || position == NAV_WEEK) { mTimeTableFragment .setDisplayType(position == NAV_DAY ? TimeTableLayout.TYPE_DAY : TimeTableLayout.TYPE_WEEK); if (mTimeTableFragment.isHidden()) { transaction.hide(mSubjectListFragment); transaction.show(mTimeTableFragment); } } else if (position == NAV_LIST) { if (mSubjectListFragment.isHidden()) { transaction.hide(mTimeTableFragment); transaction.show(mSubjectListFragment); } } transaction.commit(); mSpinnerAdapter.setViewType(position); return true; } }